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Extracting PDO driver functions into a trait, starting Sqlite driver
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107 changes: 107 additions & 0 deletions
107
lib/Cake/Model/Datasource/Database/Driver/PDODriver.php
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| <?php | ||
|
|
||
| namespace Cake\Model\Datasource\Database\Driver; | ||
|
|
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| use Cake\Model\Datasource\Database\Statement; | ||
| use PDO; | ||
|
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| trait PDODriver { | ||
|
|
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| /** | ||
| * Establishes a connection to the databse server | ||
| * | ||
| * @param array $config configuration to be used for creating connection | ||
| * @return boolean true on success | ||
| **/ | ||
| public function connect(array $config) { | ||
| $connection = new PDO( | ||
| $config['dsn'], | ||
| $config['login'], | ||
| $config['password'], | ||
| $config['flags'] | ||
| ); | ||
| $this->connection($connection); | ||
| return true; | ||
| } | ||
|
|
||
| /** | ||
| * Returns correct connection resource or object that is internally used | ||
| * If first argument is passed, it will set internal conenction object or | ||
| * result to the value passed | ||
| * | ||
| * @return mixed connection object used internally | ||
| **/ | ||
| public function connection($connection = null) { | ||
| if ($connection !== null) { | ||
| $this->_connection = $connection; | ||
| } | ||
| return $this->_connection; | ||
| } | ||
|
|
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| /** | ||
| * Disconnects from database server | ||
| * | ||
| * @return void | ||
| **/ | ||
| public function disconnect() { | ||
| $this->_connection = null; | ||
| } | ||
|
|
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| /** | ||
| * Prepares a sql statement to be executed | ||
| * | ||
| * @param string $sql | ||
| * @return Cake\Model\Datasource\Database\Statement | ||
| **/ | ||
| public function prepare($sql) { | ||
| $statement = $this->connection()->prepare($sql); | ||
| return new Statement($statement, $this); | ||
| } | ||
|
|
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| /** | ||
| * Starts a transaction | ||
| * | ||
| * @return boolean true on success, false otherwise | ||
| **/ | ||
| public function beginTransaction() { | ||
| return $this->connection()->beginTransaction(); | ||
| } | ||
|
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| /** | ||
| * Commits a transaction | ||
| * | ||
| * @return boolean true on success, false otherwise | ||
| **/ | ||
| public function commitTransaction() { | ||
| return $this->connection()->commit(); | ||
| } | ||
|
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| /** | ||
| * Rollsback a transaction | ||
| * | ||
| * @return boolean true on success, false otherwise | ||
| **/ | ||
| public function rollbackTransaction() { | ||
| return $this->connection()->rollback(); | ||
| } | ||
|
|
||
| /** | ||
| * Returns a value in a safe representation to be used in a query string | ||
| * | ||
| * @return string | ||
| **/ | ||
| public function quote($value, $type) { | ||
| return $this->connection()->quote($value, $type); | ||
| } | ||
|
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| /** | ||
| * Returns last id generated for a table or sequence in database | ||
| * | ||
| * @param string $table table name or sequence to get last insert value from | ||
| * @return string|integer | ||
| **/ | ||
| public function lastInsertId($table = null) { | ||
| return $this->connection()->lastInsertId(); | ||
| } | ||
|
|
||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,55 @@ | ||
| <?php | ||
|
|
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| namespace Cake\Model\Datasource\Database\Driver; | ||
|
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| use Cake\Model\Datasource\Database\Statement; | ||
| use PDO; | ||
|
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| class Sqlite extends \Cake\Model\Datasource\Database\Driver { | ||
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| use PDODriver { connect as protected _connect; } | ||
|
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| /** | ||
| * Base configuration settings for Sqlite driver | ||
| * | ||
| * @var array | ||
| */ | ||
| protected $_baseConfig = [ | ||
| 'persistent' => false, | ||
| 'database' => ':memory:', | ||
| 'encoding' => 'utf8', | ||
| 'flags' => array(), | ||
| 'dsn' => null | ||
| ]; | ||
|
|
||
| /** | ||
| * Establishes a connection to the databse server | ||
| * | ||
| * @param array $config configuration to be used for creating connection | ||
| * @return boolean true on success | ||
| **/ | ||
| public function connect(array $config) { | ||
| $config = $this->_baseConfig + array('login' => null, 'password' => null); | ||
| $config['flags'] += [ | ||
| PDO::ATTR_PERSISTENT => $config['persistent'], | ||
| PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION | ||
| ]; | ||
|
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| if (empty($config['dsn'])) { | ||
| $config['dsn'] = "sqlite:{$config['database']}"; | ||
| } | ||
|
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| return $this->_connect($config); | ||
| } | ||
|
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| /** | ||
| * Returns whether php is able to use this driver for connecting to database | ||
| * | ||
| * @return boolean true if it is valid to use this driver | ||
| **/ | ||
|
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| public function enabled() { | ||
| return in_array('sqlite', PDO::getAvailableDrivers()); | ||
| } | ||
|
|
||
| } |
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